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ID: python-django/open-filename-from-request
Language: Python
Severity: Error
Category: Security
Improper validation of input data, leading to potential data leaks. The path should be checked and validated before opening a file in order to prevent opening random files and leaking data.
def download_file1(request):
url = request.GET.get("filename")
print(f"url of the file: {url}")
file = open(url, "rb")
with open(url) as f:
pass
pass
def download_file2(request):
url = request.POST.get("filename")
print(f"url of the file: {url}")
file = open(url, "rb")
with open(url) as f:
pass
pass
def download_file3(request):
url = request.BLA.get("filename")
print(f"url of the file: {url}")
file = open(url, "rb")
with open(url) as f:
pass
pass
import os
def download_file(request):
url = request.GET.get("filename")
if ".." in url:
return
sanitized_path = os.path.realpath(url, strict=True)
print(f"url of the file: {url}")
file = open(sanitized_path, "rb")
with open(sanitized_path) as f:
pass
pass
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